(1981). United States-Canadian relations and acid rain: Hearing before the Subcommittees on Human Rights and International Organizations and on Inter-American Affairs of the Committee on Foreign Affairs, House of Representatives. U.S. Government Printing Office.
Chicago-Zitierstil (17. Ausg.)United States-Canadian Relations and Acid Rain: Hearing Before the Subcommittees on Human Rights and International Organizations and on Inter-American Affairs of the Committee on Foreign Affairs, House of Representatives. Washington/D.C: U.S. Government Printing Office, 1981.
MLA-Zitierstil (9. Ausg.)United States-Canadian Relations and Acid Rain: Hearing Before the Subcommittees on Human Rights and International Organizations and on Inter-American Affairs of the Committee on Foreign Affairs, House of Representatives. U.S. Government Printing Office, 1981.